MM Waterproof Expansion Joint Systems



SPECIFICATION

Sections 07 90 00 and 07 95 00

(Formerly Sections 05810 / 07102 / 07915)

Waterproof Expansion Joint Systems

Master Specification for Traffic Bearing Joints

PART 1 – GENERAL

01. Work Included

A. The work shall consist of furnishing and installing waterproof expansion joints in accordance with the details shown on the plans and the requirements of this specification. The expansion joints utilize extruded elastoprene rubber or silicone membrane seals. The specifications shall govern in the event of any discrepancy between the contract drawings and specifications.

B. Related Work

• Section 03 30 00 – Cast-in-place concrete

• Section 07 60 00 – Flashing and sheet metal

• Section 07 90 00 – Joint Protection

• Section 07 95 00 – Expansion Control

02. Submittals

A. General – Submit the following according to Division 1 Specification Section.

B. Standard Drawings – Submit typical expansion joint drawings indicating pertinent dimensions, general construction, blockout dimensions and product information.

03. Product Delivery, Storage and Handling

A. Deliver products to site in Manufacturer’s original, intact, labeled containers and store under cover in a dry location until installed. Store off the ground in temperatures above 40ºF, protect from weather and construction activities.

04. Basis of Design

A. All joints shall be designed to meet the specified performance criteria of the project as manufactured by MM Systems Corp., 50 MM Way, Pendergrass, GA, 30567 / Tel. 866.506.6929 / Fax. 706.824.7501 / Web

B. Alternate manufacturers will not be considered for this project due to insufficient product evaluation time. Submit for future evaluation, products that meet the design criteria and exhibit performance features that are equal to or superior to those called for in the base product specification. Submittal of alternates must be made two weeks prior to bid opening on future projects to allow proper evaluation time. Alternate products not adhering to all listed design features will not be considered. Final decision will be at the sole discretion of the architect or consulting engineer.

C. Submit verifiable list of prior installations, along with owner contact information, showing successful experience with the proposed systems.

1 Quality Assurance

[SPEC WRITERS NOTE: The following notes represent quality assurance measures necessary to insure the long-term success of the expansion joint systems specified.]

A. Pre-construction – the General Contractor, Engineer/Architect, Concrete Subcontractor, Manufacturer’s Representative and Certified Contractor, will conduct a pre-construction meeting to discuss blockout construction, joint gap settings and construction phasing. This meeting shall be held prior to any concrete placement at expansion joint locations and may be held in conjunction with the concrete pre-pour meeting.

B. Joint Opening Adjustment – the manufacturer and project engineer shall jointly provide calculations to the concrete subcontractor to adjust the nominal joint opening the day of the concrete placement. Use a “temperature adjustment table” with expansion joint openings calculated in five (5ºF) degree increments based on a temperature range of [adjust for project] -20ºF to 120ºF. Expansion joints shall not be installed until the structure has undergone its anticipated short-term shortening and creep.

[SPEC WRITERS NOTE: Expansion Joints that are recessed into the deck require blockouts and must include notes C & D.]

C. Expansion Joint Blockouts - shall be floated and troweled before final cure to remove all air pockets, voids and spalls caused by formwork.

D. Areas Adjacent to Expansion Joint - two feet on each side of joint gap shall be finished and graded perpendicular to joint gap creating flush slab-to-slab transition with identical elevations. Creation of an elevated concrete wash is recommended at these locations to insure a downward slope for water drainage.

E. Pre-installation Inspection – the General Contractor, Engineer/Architect, Manufacturer’s Representative and Certified Contractor, will conduct a pre-installation project site inspection. The General Contractor shall provide a field report that summarizes the project conditions and any remedial action necessary to correct field conditions (substrate, joint size, blockout, vertical offsets, etc.) that may affect expansion joint system performance.

F. Service Condition - insure that anticipated service conditions (loads, speed of traffic, movement, vertical offsets, turning lanes, etc) are part of the expansion joint system selection criteria.

G. Certification / Installation – a factory-trained and “certified” contractor shall install the specified expansion joint system. The contractor shall provide proof of certification from manufacturer and proof of participation in manufacturer’s continuing education program.

H. Warranty – the Manufacturer and Certified Contractor jointly warrant to the Owner that the expansion joint system shall be free from manufacturing, material and installation defects for a period of [based on selected EJ system one (1) to five (5)] years from the date of installation, based on specified movements and design conditions for normal traffic use as recommended by the National Parking Association’s “Parking Facility Maintenance Manual” and subject to the terms and conditions of the manufacturer’s standard written limited warranty. The warranty covers leakage at the joint under normal use due to cohesive or adhesive failure and material failure related to tearing, weathering or abrasion. No liability or responsibility is accepted due to defects in the concrete. The Certified Contractor and Manufacturer shall provide at no charge, all materials and labor needed to properly repair the defective expansion joint within the term of the warranty.

PART 2 – PRODUCT

01. General

A. Provide watertight expansion joint sealing system that meets the specified movement requirements and is capable of accommodating vehicular and pedestrian traffic.

B. System shall consist of elastoprene, silicone or EPDM rubber seals that are secured to the concrete deck creating a high performance monolithic sealing system that prevents water intrusion.

C. All expansion joint systems and glands shall comply with the Americans with Disabilities Act guidelines to accept pedestrian traffic.

D. Select the system size at each joint location based on the movement and design requirements that meet the project specification or as defined by the structural engineer of record.

E. The same Manufacturer shall be used throughout the entire project inclusive of each type of expansion joint selected.

F. The Certified Contractor must provide written confirmation, utilizing manufacturer’s product data, insuring that the model and size selected will comply with and accommodate expansion, contraction, vertical displacement and lateral shear throughout the full movement cycle.

2. Expansion Joint System Types

[SPEC WRITER'S NOTE: Proper joint selection is dependent on determining the anticipated movement of the joint. It is the architect/engineers responsibility to compute this value. The required joint size and joint type can vary from location to location. If this is the case, the specification and drawings need to be edited accordingly to clearly designate what specified joint types and sizes are to be installed at what locations. Select and edit the following approved vehicular bearing seismic expansion joint system types based on the project requirements]

A. Approved LokCrete Membrane System (LMS Series), as manufactured by MM Systems Corporation - The expansion joint system shall be waterproof and include impact absorbing elastomeric concrete that bonds a continuous elastoprene membrane seal to the concrete deck. The elastomeric concrete shall be manufactured in an ISO9001 production environment. The system shall consist of elastoprene rubber seals with integral side flanges with punched holes that are encapsulated using an elastomeric concrete header to secure it into a blockout in the concrete deck. Elastomeric concrete headers requiring primers to bond to the concrete will not be allowed. The rubber seal shall include steel reinforced splice connections and a tire impact dampening bulkhead design. Slab-to-wall conditions require a seal design specific to that application – turning up the side flange is not permissible.

[SPEC WRITER'S NOTE: Many manufacturers utilize a primer to achieve proper bond of the elastomeric concrete to the concrete deck. Typically these primers act as a moisture barrier that prevents the polyurethane based elastomeric concrete from foaming. The open cure time is normally less than 5 minutes. This necessitates immediate placement of the elastomeric concrete otherwise sandblasting is required. It is recommended to select a product that does not require a primer/moisture barrier. It is further recommended to require metal pin reinforced splice connections.]

B. Approved ElastoLok Membrane System (EMS Series), as manufactured by MM Systems Corporation - The expansion joint system shall be waterproof and designed for recessed blockouts that utilizes metal reinforced rubber panels that lock down continuous wings of a elastoprene rubber seal. Slab-to-wall conditions require a seal design specific to that application – turning up the side flange is not permissible. The system must be capable of bearing vehicular traffic, fork-trucks, buses, heavy loads, snowplows and extreme weather conditions.

C. Approved Epoxy Bonded Sealing System (EBS Series), as manufactured by MM Systems Corporation – The expansion joint shall be a waterproof sealing system with a continuous elastoprene rubber seal that is bonded in place with a thixotropic structural epoxy adhesive for joint openings without blockouts. The system must be capable of bearing high-speed vehicular traffic, buses, heavy loads, and extreme weather conditions.

[SPEC WRITER'S NOTE: There are two designs available in the market. The first design requires air inflation and relies solely on epoxy adhesive to bond the rubber to concrete. The second and preferred design utilizes a rubber seal that employs an additional middle hinge cell that accommodates vertical slab deflection that decreases shear stress on the epoxy bond line while exerting a continuous outward force for additional support.]

D. Approved Split Slab Membrane System (SSM Series), as manufactured by MM Systems Corporation - The expansion joint shall be a waterproof sealing system designed for split slab applications that utilizes heavy-duty aluminum frames with a continuous locking elastoprene seal that ties directly into the deck waterproofing. A protective interlocking stainless steel retaining cap prevents damage from concrete pavers, the topping slab and vehicular traffic.

[SPEC WRITER'S NOTE: Split Slab Membrane Systems are designed to accommodate brick pavers, concrete pavers and concrete topping slabs. The waterproofing deck membrane ties directly into a slot in the expansion joint frame. The wing of the membrane seal snap locks into the same cavity thereby creating an uninterrupted waterproof seal.]

E. Approved Armored Strip Membrane System (ASM Series), as manufactured by MM Systems Corporation - The expansion joint shall be shall be a waterproof sealing system designed for applications that require an armored metal edge with a continuous locking elastoprene seal and a secondary waterproofing gutter. The ASM utilizes heavy-duty metal frames cast-in place with elastomeric concrete. A protective interlocking stainless steel retaining cap resists damage from vehicular traffic.

[SPEC WRITER'S NOTE: Armored Strip Membrane Systems are designed as waterproof sealing system that is cast-in place with elastomeric concrete that bonds directly to the concrete deck. The system is comprised of heavy-duty aluminum frames with a continuous locking elastoprene seal. A protective interlocking stainless steel retaining angle cap to reduces damage from vehicular traffic and allows the seal to be replaced.]

F. Approved Armored Strip Bolt-down System (ASB Series), as manufactured by MM Systems Corporation - The expansion joint shall be shall be a waterproof sealing system designed for applications that require an armored metal edge with a continuous locking elastoprene seal and a secondary waterproofing gutter. The ASB combines bolt-in place heavy-duty metal frames and elastomeric concrete. A protective interlocking stainless steel retaining cap resists damage from vehicular traffic.

[SPEC WRITER'S NOTE: Armored Strip Bolt-down Membrane Systems are designed as waterproof sealing system utilizing elastomeric concrete to bond the bolt-in place aluminum frames directly to the concrete deck. The system is comprised of heavy-duty aluminum frames with a continuous locking elastoprene seal. A protective interlocking stainless steel retaining angle cap to reduces damage from vehicular traffic and allows the seal to be replaced.]

G. Approved Expanding Impregnated Foam (EIF Series), as manufactured by MM Systems Corporation - The expansion joint shall be micro-cell polyurethane foam impregnated with an acrylic polymer that is UV stable, flame resistant, chemical resistant. It shall be bonded in place with a thixotropic structural epoxy adhesive.

[SPEC WRITER'S NOTE: Expanding Impregnated Foam Systems are designed as waterproof sealing system utilizing a micro-cell polyester foam that is impregnated with an acrylic polymer and may be combined with a field applied silicone weather sealant. The system is factory pre-compressed and then released in the field to expand and fill the expansion joint opening.]

H. Approved Elastoprene Compression Seals (ECS Series), as manufactured by MM Systems Corporation - The expansion joint shall be a continuous multi-web elastoprene compression seal that remains in compression throughout its entire movement cycle. It shall be bonded in place with polyurethane adhesive creating a watertight seal.

[SPEC WRITER'S NOTE: Compression seals must always be in a state of compression. This means that maximum expansion joint opening may not exceed 85 percent the relaxed nominal width of the seal. The joint opening sidewalls must be parallel plumb in order to achieve an acceptable degree of waterproofing.]

I. Approved Polyurethane Premold Textured Sealing System (PPT Series), as manufactured by MM Systems Corporation - The expansion joint system shall be continuous textured polyurethane premold over a metal support plate. System is secured into a blockout with field applied polymeric sealant making it watertight.

[SPEC WRITER'S NOTE: Premolded Urethane Systems must be installed while the joint opening is as close to its minimum as possible. This will allow the premold to remain in tension throughout its movement cycle and prevent it from bulging upward and becoming a trip hazard This type of system not recommended for vehicular traffic areas. It is best suited for stadium seating bowl stair tread & riser areas and joints with limited amounts of movement.]

J. Approved Flexible Rubber Gutter System (FGS Series), as manufactured by MM Systems Corporation - The secondary backup system and water containment system shall have a continuous fabric reinforced 60-mil EPDM rubber bellow attached to the underside of the expansion joint opening with aluminum mounting plates. Provide flexible downspout drain tubes as required.

[SPEC WRITER'S SELECTION NOTE: Select and edit the following approved waterproof expansion joint system types based on the project requirements These systems are well suited for slab-to-wall conditions, around elevator shafts, stair towers and vertical joint openings.]

K. Approved Engineered Silicone Sealing System (ColorJoint ESS Series), as manufactured by MM Systems Corporation – The expansion joint sealing system shall combine a factory applied silicone seal fused to a cellular polyurethane / polyester binary backer block. The seal shall be installed with field-applied silicone into pre-engineered reveals creating a monolithic waterproof seal. The system shall be capable of sealing varying and irregular joint openings for vertical and horizontal applications. Available in a wide variety of colors.

L. Approved Silicone Self-expanding Impregnated Foam Sealing System (ColorJoint SIF Series), as manufactured by MM Systems Corporation – The expansion joints utilizes a factory applied silicone face seal and a secondary micro-cell polyurethane foam impregnated with an acrylic polymer that is UV stable, flame resistant, chemical resistant. The system is factory pre-compressed and then released in the field to expand and fill the expansion joint opening. Available in a wide variety of colors.

M. Approved StadiaSeal (STR Series), as manufactured by MM Systems Corporation - The stadium seating bowl tread & riser expansion joint sealing system shall be closed cell expanded rubber seal with a durable poly vinyl chloride polymer added to facilitate heat seam welded transitions. It shall be bonded in place with a thixotropic structural epoxy adhesive.

[SPEC WRITER'S NOTE: StadiaSeal is designed as waterproof sealing system engineered to accommodate difficult stair tread and riser transitions. The STR can accommodate vertical offsets, non-parallel sidewalls, varying joint widths and skewed interfaces.]

N. Approved Expanded Rubber Sealing System (ERS Series), as manufactured by MM Systems Corporation - The expansion joint shall be a watertight sealing system for vertical and horizontal expansion joints. The system utilizes a closed cell expanded elastoprene rubber seal bonded in place with a thixotropic structural epoxy adhesive. The system shall accommodate varying and irregular joint openings, vertical slab offsets and stair tread & risers.

O. Approved Vertical Sealing System (VSS Series), as manufactured by MM Systems Corporation - for vertical seismic expansion joint system shall include a primary visual seal and a secondary moisture barrier. Seals shall be supplied in continuous lengths and snap locked into aluminum mounting frames. Wider seismic applications shall utilize a pantograph-centering device.

[SPEC WRITER'S NOTE: VSS is a waterproof vertical sealing system engineered to accommodate seismic movement in large structural openings from 2 to 36 inches wide.]

P. Approved Vertical Compression Seal (VCS Series), as manufactured by MM Systems Corporation - The expansion joint shall be a continuous low stress multi-web elastoprene compression seal that remains in compression through out its entire movement cycle. It shall be bonded in place with polyurethane adhesive creating a watertight seal.

3. Components and Materials

[SPEC WRITERS NOTE: Edit the following expansion joint materials and incorporate those required for a specific project.]

[SPEC WRITER'S NOTE ON ELASTOMERIC CONCRETE: Many elastomeric concretes have published initial elongation properties as high as 200% that decline to 25% after aggregate is added. A final mixture percentage of 10% is the ideal elongation. The goal should be to have no change in the elongation percentage when aggregate is added. This demonstrates that the system is very stable and that the aggregate integrates with the physical properties. The lower the elongation and higher the tensile strength produces a stronger and more abrasive resistant system. The system will not easily bend, break, splinter, or reform. The system can flex with concrete deck loads and bond tenaciously to the substrate. It will not deform when pressure is applied over a period of time. Consequently, movement occurs in the rubber seal part of the system, which by design provides the expansion and contraction flexibility rather than the embedding material, which is designed to provide monolithic fixation to the substrate. For example, when a car drives over an expansion joint with low elongation elastomeric concrete, the surface will not bend or distort when traffic load is applied. If the elastomeric concrete has high elongation properties the traffic load tends to bend and reform the wearing surface. Over time this will cause dips and deterioration in the elastomeric concrete surface because high elongation systems become weak and soft and provide insufficient abrasive resistance.]

A. Elastomeric Concrete – provide elastomeric concrete header material produced in an ISO9001 manufacturing facility consisting of polyurethane liquid components “A” and “B” and a specialty aggregate component “C”. Elastomeric concrete must cure exothermically.

Physical Properties of Elastomeric concrete binder after seven-day cure at room temperature:

Property Requirement ASTM Method

Tensile Strength 4750 psi D412

Compressive strength 9200 psi D695

Ultimate Elongation 10% D412

Hardness, Shore D 78 +/- 5 D2240

Tear Resistance 200 pli / 35 kN/m D624

Water Absorption 3% D570

Heat Shrinkage, max. 2% D1299

Compression Set 48% D395

Pot Life 25 minutes (after mixing)

Physical Properties of Elastomeric concrete binder & aggregate mix:

Property Requirement ASTM Method

Compressive strength 2750 psi D695

Resilience @ 5% deflection 95% D695

Compressive stress, psi 800 psi min. D695

Impact resistance, ft-lb, @ -20(F No Cracks Ball drop

Adhesion to concrete Concrete Failure D421

B. High Strength Epoxy Adhesive – provide manufacturer’s two-component high strength aggregate reinforced epoxy adhesive. Epoxy shall consist of liquid components “A” white and “B” black resulting in a gray mix to insure complete and proper blend. Epoxy shall be non-sag gel with zero VOC and 100% solids content.

Epoxy Adhesive is utilized to ensure a watertight bond between the ribbed sidewall profiles of an elastoprene rubber seal and the vertical walls of the concrete joint opening.

Physical properties of two-component thixotropic epoxy paste adhesive:

Property Requirement ASTM Method

Hardness, Shore D 75 +/-5 D2240

Tensile Strength @ max. 1800 psi D638

Tensile Elongation 2 – 4% D638

Compressive Strength 7000 psi D695

Pot Life 45 – 60 minutes

C. ElastoBond Activator – all seals that are adhered by elastomeric concrete or epoxy shall receive a brush applied chemical activator that will permit a chemical cross-linking of the polymers (weld) between the rubber and elastomeric concrete or epoxy.

D. Rubber Seals (ECS) – material shall be a flexible, extruded elastoprene rubber compound exhibiting the physical properties listed in the table below.

Membrane Seals (LMS, EMS, SSM, ASM, ASB) – the rubber seal design shall have a wing flap and must be supplied in the longest continuous length possible. The wings shall be anchored into a blockout in the deck by means of elastomeric concrete, rubber bolt-down panels or aluminum frames to ensure water tightness.

Epoxy Bonded Rubber Seal (EBS) – material shall be a flexible, extruded elastoprene rubber exhibiting the physical properties listed in the table below. To ensure a watertight seal, the seal shall have ribbed sidewall profiles through which an epoxy adhesive bonds the seal to the vertical walls of the joint opening.

Vertical Seals (VSS & VCS) – the rubber seal design shall have a multi-cellular design or ear lugs that to lock into an aluminum frame. The seal shall be supplied in the longest continuous length possible.

Physical Properties of Elastoprene-100 Rubber Seals:

Property Requirement ASTM Method

Tensile Strength 1000 psi (+75/-0) D412

Ultimate Elongation 445% D412

Hardness, Shore A 65 +/- 3 pts. D2240

Tear Strength 140 pli / 24.5 kN/m @ 23(C D624

58 pli / 10.2 kN/m @100(C D624

Compression set

168 hrs. 25% @ 23(C D395

168 hrs. 38% @ 100(C D395

Ozone Resistance No Cracks D1149

UV Resistance Very Good

Brittle Point -76(F(-60(C) D746

E. Polyurethane Premold - joint seal shall be a factory molded and cured polyurethane with chamfered edges. Provide seal with non-slip serrated walking surface. The system shall incorporate the manufacturer’s nosing materials, bedding compounds and traffic support plate to form a complete watertight installation.

Physical Properties of Polyurethane Premold Seal @ 73ºF (23ºC):

Property Requirement ASTM Method

Hardness, Shore A 30 +/-5 C661

Tensile Strength 250 psi D412

Ultimate Elongation 700% D412

Low Temperature Pass D1790

Movement Capability 16%

Temperature Range -40°F (-40ºC) to 150ºF (66ºC)

F. Silicone Seal – for structural expansion joints, panel joints, window perimeter joints, EIFS panel joints, curtain walls joints or other penetrations of the building envelope. Silicone material shall consist of a primary flexible preformed silicone rubber compound exhibiting the physical properties listed in [one of the two] tables below representing [ColorJoint ESS or ColorJoint SIF].

Physical Properties of ColorJoint ESS Silicone Rubber Seal after 14 days at 77(F (25(C) and 50% relative humidity. The ESS secondary seal shall be cellular polyurethane backer block creating a binary watertight joint system.

Property Requirement ASTM Method

Hardness, Shore A 37 - 40 C661

Tensile Strength @ max. 1.52-1.59Mpa (220-230 psi) D412

Ultimate Elongation 235 – 260% D412

Tensile Strength @ 100% 0.62-0.69Mpa (90-100 psi) C1135

Tear Strength 35-40 pli / 6.14-7.02 kN/m D624

Peel Strength, glass 16-22 pli / 2.81-3.86 kN/m C794

Cyclical Movement ± 50% C719

Physical Properties of ColorJoint SIF Silicone Rubber Seal after 14 days at 77(F (25(C) and 50% relative humidity. The SIF secondary seal shall be shall be a micro-cell polyurethane foam impregnated with an acrylic polymer that is UV stable, flame resistant, chemical resistant, and meets ASTM 283, ASTM 518, and DIN 18542.

Property Requirement ASTM Method

Hardness, Shore A 15 points C661

Tensile strength @ max. 100 psi (.07 kg/mm2) D412

Tensile at 25% extension 15 psi (.010 kg/mm2) C1135

Tensile at 50% extension 20 psi (.015 kg/mm2) C1135

Peel Strength 25 lb/in (4.46 kg/cm) C794

Cyclical Movement +100 / -50% C719

G. Expanding Impregnated Foam Seals (EIF Series) – shall be a micro-cell polyurethane foam impregnated with an acrylic polymer that is UV stable, flame resistant, chemical resistant, and meets ASTM 283, ASTM 518, and DIN 18542.

Physical Properties of Expanding Impregnated Foam

Property Requirement ASTM Method

Density Average 15 points D3575

Resistance – thermal 100 psi (.07 kg/mm2) C518

Conductivity – thermal 15 psi (.010 kg/mm2) C518

Temp. Stability Range 20 psi (.015 kg/mm2) D1056

Shear Strength 25 lb/in (4.46 kg/cm)

Tensile Strength +100 / -50% D3574

Compression Set Resistance 2.5% max. D3574

Bleeding (212°F at 20% compress) None

Mildew Resistance Excellent

H. Expanded Rubber Seal (ERS) – material shall be a flexible, extruded elastoprene expanded rubber exhibiting the physical properties listed below. To ensure a watertight seal, the seal shall have serrated sidewall profiles through which manufacturer’s epoxy adhesive bonds the seal to the vertical walls of the joint opening.

Physical properties of Elastoprene-200 expanded rubber seal:

Property Requirement ASTM Method

Tensile Strength 125 psi D412

Elongation Break 200% min. D412

Hardness, Shore 00 35-65 points D2240

Compression Set

22 hrs. / 50% compressed 15-25% @ 70°F/21(C D1056

Ozone Resistance No Cracks D1149

Density 12-15 pcf D1056

Water Absorption 5% by weight D1056

[SPEC WRITERS NOTE: Building codes now require that many expansion joint openings be fire rated as part of life safety design criteria. Manufacturer should be able to demonstrate verifiable experience that they have been manufacturing, designing and testing fire barriers for a minimum of ten years. Include Section 2.04 if fire rated expansion joints is a project requirement.]

4. Life Safety – Fire Barrier Systems

A. Approved PyroFlex( Fire Barrier Systems (UPF Series), as manufactured by MM Systems Corporation - Supply fire-resistive barrier systems that have ratings equal to or greater than the rating of adjacent construction when tested in accordance with ASTM E1966 and UL2079. Provide specified (2, 3 or 4 hour) rated fire barrier expansion joint assembly.

B. Fire Barrier System shall be capable of anticipated movement and maintain fire rating through precondition cycling and fire performance testing. System shall have factory and field-tested splices. Manufacturer shall provide field-splicing instructions.

C. Fire Barrier System shall have been tested in accordance with ASTM E1966 and UL2079 at a maximum joint opening as defined by ASTM E1399 that meets or exceeds the maximum joint opening required by the project design requirements. System and manufacturer shall be listed with an accredited independent laboratory.

[SPEC WRITERS NOTE: Edit the following expansion joint fabrication and finishes sections to incorporate those required for a specific project.]

5. Fabrication

A. Rubber Seals – ship in the longest practical continuous length coiled on manufacturer’s standard reel or on wooden pallets and shrink-wrapped.

B. Silicone Binary Seals - shall be supplied in six-foot lengths and individually bagged to protect from construction debris.

C. Fabric Reinforced Rubber Gutter – shall be shipped in the longest practical continuous length in manufacturer’s standard shipping carton.

D. Elastomeric Concrete Header – components A, B and C shipped in self-contained 5-gallon unit and shrink wrapped on wooden pallets.

E. Wall Mount Plate (slab-to-wall condition) – aluminum retainer shall be shipped in standard 10 ft. lengths and shall be cut to length on jobsite where required.

F. Fire Barriers (as required) – ship manufacturer’s standard assembly for the required hourly rating with ends prepared for field splicing. Assemblies shall be miter cut in the field to accommodate changes in direction.

6. Finishes

A. Elastoprene-100 rubber seals shall be supplied in standard black, special order gray or special order custom colors.

B. Elastoprene-200 rubber seals shall be supplied in UV stable black meeting requirements of ASTM C864.

C. Polyurethane Premold Seals shall be supplied in standard concrete gray color with a textured walking surface.

D. Silicone Seals shall be supplied in selected standard or custom colors.

E. Vertical Seals shall be supplied in selected standard or custom colors.

F. Elastomeric Concrete - shall be supplied in standard black or special order gray.

[SPEC WRITERS NOTE: Edit the following execution section to incorporate those steps required for a specific project.]

PART 3 – EXECUTION

01. Installation

A. Preparation of the Work Area

1. The contractor shall provide properly formed concrete blockouts and expansion joint openings constructed to the exact dimensions and elevations shown on manufacturer’s standard system drawings or as shown on the contract drawings. Deviations from these dimensions will not be allowed without the written consent of the engineer of record.

2. Actual field conditions of existing expansion joint blockouts may be deeper and wider than the proposed new expansion joint system as detailed on the contract drawings. When existing blockout is larger additional elastomeric concrete material shall be used. Do not use an unapproved patching material to fill and reduce blockout depth. When blockout size is smaller it shall be made larger by saw cutting.

3. The base of the blockout recess must be formed level and at the same elevation across the joint. Any edge or area in need of repair shall utilize structural concrete repair materials.

4. For new construction and full concrete restorations it is recommended to create an elevated concrete wash with a two-foot flat surface at the top. Elevations at the top of the wash shall be above those of the finished deck insuring a downward slope for water drainage.

5. For projects without elevated washes it is recommended that the finished concrete slab elevation be identical for a two-foot transition area on each side of the expansion joint opening.

6. All cracks in areas adjacent to the joint must be repaired per the joint manufacturers recommendations.

7. Expansion joint systems shall be installed in strict accordance with the manufacturer's typical details and instructions along with the advice of their qualified representative. Refer to Manufacturers Installation Guide for detailed step-by-step installation instructions.

B. Rubber Seal and Expansion Joint System Installation

1. The contractor shall clean the expansion joint installation area of all contaminants by abrasive blasting immediately prior to installation of expansion joint system. Concrete form release agents, water repellents, laitance, surface dirt, rust, old sealants and other surface treatments and protective coatings must be removed from the expansion joint opening substrate surface in order to obtain the proper bond.

2. Uncoil the seal and allow it to relax to relieve any temporary coiling from shipment packaging. The seal shall be cut to the correct length without pulling or exerting excess tension.

3. Refer to section 1.05 of this specification on Quality Assurance requirements.

4. Refer to Manufacturers Product Specific Installation Guides for detailed step-by-step installation instructions.

C. Elastomeric Concrete Installation

1. The contractor shall clean the concrete blockout of all contaminants by abrasive blasting immediately prior to installation of expansion joint system. Concrete form release agents, water repellents, laitance, surface dirt, rust, old sealants and other surface treatments and protective coatings must be removed from the blockout substrate surface in order to obtain the proper elastomeric concrete bond.

2. Cease installation of expansion joints under adverse weather conditions, or when temperatures are below Manufacturer's recommended limitations for installation.

3. Do not install elastomeric concrete until the concrete has been air-dried at temperatures at or above 45 degrees F. for at least 28 days minimum and the concrete must have a measured moisture content that is below 4 percent. The blockout area must be completely dry prior to placement of the elastomeric concrete. Blockouts requiring the use of structural repair materials must be cured for 72 hours. Blow out the area thoroughly using compressed air.

4. Mask adjacent concrete surfaces with tape to provide neat, clean joint line, workmanlike appearance. (Remove tape prior to the curing process)

5. Refer to Manufacturers Installation Guide for detailed step-by-step instructions on how to properly mix and install elastomeric concrete.

6. IMPORTANT - Premature exposure to vehicular traffic can cause stress on the bond line related to vertical slab deflection. For best results wait a minimum of 24 hours (depending on temperature and humidity) before allowing vehicular traffic to drive over the system (contact manufacturer if faster opening time is required).

02. Clean and Protect

A. Protect the system and its components during construction. Heavy construction vehicles will not be permitted to cross the expansion joint. Subsequent damage to the expansion joint system will be repaired at the general contractor’s expense. After work is complete, clean exposed surfaces with a suitable cleaner that will not harm or attack the finish.

END OF SECTION

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Master Specification - Waterproof Expansion Joints

MM Systems Corporation / 10-14-09

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